Clear pictures from the wall near the broken Command Strip so you don’t knock anything off the wall while removing the broken hanger.
Test the surface. Before you attempt to remove the broken 3M Command Strip, take the blow dryer and heat a small inconspicuous area of the wall. Make sure that heating the wall will not damage the surface or cause the paint to bubble. Apply hot air on the surface for a minute or two.
Apply heat to the broken 3M Command Strip. The heat from the blow dryer will cause the adhesive backing to loosen.
While the glue is warm, cut through the foam with dental floss to gently to remove the hook or hanger from the surface. Stretch or peel remaining adhesive from the wall.
Wipe the surface with alcohol after it has cooled to remove any sticky residue.